Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fair

81°F

27°C

Humidity 58%
Wind Speed S 12 mph
Barometer 29.86 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 20 Jun 5:45 pm CDT
Extended Forecast for

Pewaukee WI

Heat Advisory June 21, 12:00pm until June 23, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Partly cloudy, with a low around 72. South wind 10 to 15 mph.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 93. Heat index values as high as 102. Windy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 93 °F

    Hot and Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 76 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 94. Heat index values as high as 101. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 76. Southwest wind 10 to 15 mph.

    Low: 76 °F

    Clear

  • Monday

    Monday: A 20 percent chance of showers after 1pm.  Sunny and hot, with a high near 93. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 69. West wind 5 to 10 mph.

    Low: 69 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Partly sunny, with a high near 82. Northwest wind 5 to 10 mph becoming northeast in the afternoon.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 72. South wind 10 to 15 mph.
Saturday
Sunny and hot, with a high near 93. Heat index values as high as 102. Windy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.
Saturday Night
Mostly clear, with a low around 76. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Sunny and hot, with a high near 94. Heat index values as high as 101. Southwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Clear, with a low around 76. Southwest wind 10 to 15 mph.
Monday
A 20 percent chance of showers after 1pm. Sunny and hot, with a high near 93. Southwest wind around 15 mph, with gusts as high as 25 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. West wind 5 to 10 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 82. Northwest wind 5 to 10 mph becoming northeast in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Pewaukee WI
 43.08°N 88.27°W (Elev. 850 ft)
5:38 pm CDT Jun 20, 2025
6pm CDT Jun 20, 2025-6pm CDT Jun 27, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database